Allowing for the Nonlinear Elastic Properties of Composite Materials in Designing Shell Elements with Holes of Rockets

A technique of numerical solution of physically nonlinear static problems for shell elements with curved holes of rockets is formulated and developed based on an analysis of the manufacturing technology and properties of composite materials. The design models of thin-walled composite elements with h...

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Bibliographic Details
Published in:International applied mechanics 2023-09, Vol.59 (5), p.555-572
Main Authors: Maximyuk, V. A., Storozhuk, E. A., Chernyshenko, I. S.
Format: Article
Language:English
Subjects:
Applications of Mathematics
Elastic deformation
Elastic properties
Engineering
Finite difference method
Fuel tanks
Polymer matrix composites
Rockets
Spherical shells
Stress concentration
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Summary:A technique of numerical solution of physically nonlinear static problems for shell elements with curved holes of rockets is formulated and developed based on an analysis of the manufacturing technology and properties of composite materials. The design models of thin-walled composite elements with holes of rockets are based on the straight normal hypothesis and the finite difference method and allow for the nonlinear deformation of orthotropic polymeric composite materials. The nonlinear elastic state of orthotropic composite spherical shells with a hole reinforced with a flange is studied. Using, as an example, the bottom of the fuel tank of the Cyclone-4M carrier rocket made of nonlinear elastic polymeric composite material, the distribution and concentration of stresses near the hatch flange are established.
ISSN:1063-7095
1573-8582
DOI:10.1007/s10778-024-01241-5